Ferdinand blauss



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Letters Patient No. 75,725, elated March 24, 1868.

IMPROVED APPARATUS FOR SUPPLYING WATER T0 GRINDSTONES.

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Specification of Improvements in Grindstoue Water-Supply.

In tho use of grindstones for grinding down metallic surfaces, itisfound that it is often neccssaryto true i the stone in consequence ofthere being soft spots in the stone, which soft spots wearing away morerapidly Vthan the remaining surface, the stone gets out of round, and itbecomes necessary to true it up, at anexpense vwill charge the stoneabove it withmoisture.

of time and labor. I have ascertained that in most' cases these softspots are caused by au injudicious treatment of. the stone. v

It is the object of my invention to provide-a better treatment, wherebythese soft spots will not be created.

It will be found by trial and observation that if the lower part of thestone is allowed to. remain in a state of rest immersed in water formany hours, it will absorb moisture, and that during the same time theremaining surface,especially the top, will become dry. This relativestate of parts ofthe stone is produced whenever, as from Saturday nightto Monday morning, the stone is left with its lower part immersed inwater. When in this state the stone is run, it will be found that a softspot has been created that is soft in reference tothe other parts of thestone. v Y I Arsimilar result, though less in degree,is found when for aconsiderable time thc lower part of the stone is in a state of restabove theWatcr-trough, although not immersed in the water, as theevaporation from the water I propose to prevent the lower part of thestone from being water-soaked in any degree, by removing thewatcr-trough to one s ide, and separating it by a partition, and leadingthe water running from the stone, by inclined surfaces and pipes, intothe water-trough, and raising the water, by mechanical means, from theWaitertrough to a vessel, from which it can low at will on the stone. A'i Figures 1, 2, and 3 represent one combination and arrangement. A isthevgrindstone. B is the water- 4trough, placed one side, and separatedfrom the stone by a partition, C. D is the pipe, which conducts thewater Ito thc water-trough. :E is the distributor, into which the wateris raised from the water-trough by pump or o ther mechanical means, andfrom which the water lows'in small streams ou to the surface of thestone.

Dy the usc'of this combination, the stone is not subjected to the actionof 'moisture in any part except when in use, and hence all parts of thegrinding-surface are in exactly the same condition. I

Figures 4, 5, and 6 represent another combination and arrangement, inwhich, as in iigs. 1, 2, and 3, the water flows into a side trough, fromwhich it is taken by hand and put in the reservoir, from which it flowson to the stone. A,'as before, represents thc'stonc. D, as before,represents the water-trough, placed on one side, and separated from thestone by the partition C. D represents the pipenwhichconducts the waterto the watertrough.v G ,is the reservoir, kept supplied from the troughB, and from which the water runs, through pipe p, ou to thc stone.

'llhe treatment of the stone can beimproved also in another particular.It is best that the water should fbe distributed equally on the surfaceof the stone. The tendency of the water, when the stone is running, is

to gather to the centre of the surface. I therefore make ,thedistributer of the length of the face of the stone, and allow the waterto'issue in small streams only for about one-quarter of the length ateach end, with no streams, from 4the central part of the distributor.This arrangement equalizes the supply ofwater as far as may be. y i t iFigurc 7 shows this arrangement. E is the distributor, having holes at mand n at the ends, through which only the water is allowed to go on tothe stone. 4 4

What I claim as 'my invention, and desire to secure by LettersPatent,'is-

The separation of the water-trough of a grindstonc from the grind'stone,so that the lower part of the stone 'does notreniain immersed in'wateror exposed to the action of moisture of water when the stone is in astate of rest, and furnishing nater from the water-troilgh to the uppersur-face of the stone by means of a pump, or its mechanical cquimlent,worked by the revolution of the stone.

I also claim the supply of waiter tothc upper surface, by means ofstreams from the ends .of thc distributer, all substantially in themanner and for thc purpose herein described.

FERDINAND IELAUSS.

Witnesses:

linnn. W. CHILD, Cuts.V A. TArLor..

